Theater Build FINALLY Moving Forward (Titan 630LX, SHS-24, HTM-10, Volt 10...) - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 44 Old 12-29-2019, 10:27 AM - Thread Starter
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Theater Build FINALLY Moving Forward (Titan 630LX, SHS-24, HTM-10, Volt 10...)

This has been a long time coming for a number of reasons... But I can FINALLY taste it!! New house was finished just over a year ago and the basement dedicated theater room construction is wrapped up. Sealed boxes for the 6 Volt-10's were built prior to the triple green glued drywall and installed in the ceiling for Atmos. Just finished building the 8 HTM-10 flatpacks that will handle surround duty (front wides, front/back side surrounds, and rear surrounds). Xovers are all finished for the Volts, HTM's and Titans (the DIYSG PCB’s are incredible, by the way).

Rack with the XLR's and speaker wiring is finally routed, labeled and complete. Rack consists of Emotiva RMC-1, Emotiva XPA-DR3 (LCR duty), two Emotiva XPA-7's (one for the left side and one for the right side of the non-LCR speakers) and a SpeakerPower SP2-12000-DP (with room and wiring for a 2nd amp in the near future). The side surrounds are currently run on the same signal with y-cables until Emotiva gets their ***** together to bring us the speaker expansion modules, processing to support higher speaker count layouts (i.e. 11.4.6) and Dirac...

The adjacent AV closet houses two racks, one for the theater equipment and the other for home automation/whole house audio/etc. The theater rack has a dedicated 100-amp subpanel with plenty of power on tap - all amps will be run on 240v. I built power cables for them with 10g wire for for the SpeakerPower amp and 12g for the others. Regarding speaker wiring, I have 10g for the LCR, 4 runs of 10g for future subs behind the screenwall, two runs of 10g to the two sub positions at the rear of the theater (for the dual SHS-24's) and 12g to all other speaker locations.

Seating was ordered from Nick at TheaterSeatStore. Went with the Pillow HR. There are two rows of seating with the back row on a riser. Front row is 3 individual seats and back row is 4 connected seats with the outer two seats curved. Expecting these to arrive within the next few weeks. As soon as the seats are on their way, I’m going to order the JVC NX7 projector and a Seymour Center Stage XD Premier 145” 2.35 screen.

On to the Titan and SHS-24 details: I've been reading forum posts and modeling these in my head for over a year now and finally got around to finalizing my plans. The dual woofer Titans were inspired by the build thread that @eng-399 put together and obviously a HUGE thanks to @Erich H and @mtg90 for making the kits possible and answering my many questions! @Ricci at Databass brought me back into reality on the SHS-24 build and I decided sealed would be a better option for me (I had originally planned to go with huge ultra low tuned enclosures). 12 cubic feet on 6000 watts will allow me to use most of the SHS-24’s enormous xmax and give me gobs of bass flat into the single digits. I plan on additional subs up front in the near future, so losing some SPL going sealed vs ported isn’t the end of the world for the first build (famous last words of an AVS DIY member).

DIYSG Dual Woofer Titan “630LX” Enclosures (x3 for LCR):
- Overall Dimensions: 71”H x 20”W x 23.6”D
- 6cf per woofer tuned to ~30Hz
- Port (per woofer): 2.25”H x 18.5”W x 13.43”L
- 1” MDF baffle and ¾” MDF everywhere else
- 10” “dead” space in the base to clear the bottom of my drywalled screenwall

SI SHS-24 Sealed Enclosures (x2):
- Overall Dimensions: 37.75”H x 37.75”W x 21”D
- 12cf internal volume
- 1” MDF double baffle and exterior panels with ¼” rabbets
- ¾” MDF bracing

Here are models of the enclosures from Fusion 360. I'm happy to share the CAD files if anyone wants to build these or check them out closer. My cabinet guy is going to be cutting these panels on the CNC soon and I’ll update this thread with progress. Let me know if you have any questions!
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Last edited by BBLV; 12-29-2019 at 10:30 AM.
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post #2 of 44 Old 12-29-2019, 10:38 AM
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Let's not wade in the shallow end but go full DIY in the deep end. This will be a very impressive theater to say the least. Keep this thread update with lots of pictures.
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post #3 of 44 Old 12-30-2019, 11:39 AM
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Awesome. I assume CNC cut for the boxes?

Roll Tide.
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post #4 of 44 Old 12-30-2019, 11:48 AM
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post #5 of 44 Old 12-30-2019, 01:56 PM
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Quote:
Originally Posted by p3bham View Post
Awesome. I assume CNC cut for the boxes?
Quote:
Originally Posted by BBLV View Post
My cabinet guy is going to be cutting these panels on the CNC soon and I’ll update this thread with progress.
Seems like it.
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post #6 of 44 Old 12-30-2019, 02:06 PM - Thread Starter
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Quote:
Originally Posted by mtg90 View Post
Seems like it.
That's correct - CNC time! Made a few minor tweaks this morning and got the DXF files to my guy today. I added recessed Speakon mount cutouts in the back panels to allow me to place them closer to the walls without the 90 degree Speakon connector hitting, plus 1/2 inch roundovers to the port lips inside and out.
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post #7 of 44 Old 01-12-2020, 11:20 AM - Thread Starter
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CNC guy taking much longer than expected, so I'm working on finishing the angled HTM-10 enclosures for my irregularly shaped front wide columns.

Here are some rack shots, current theater room status shots and a shot of the thick custom entry door (and yes, there is glitter mixed into the black paint in the entry hall to the theater).
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post #8 of 44 Old 01-12-2020, 11:53 AM
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This is awesome! Keep the updates coming
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post #9 of 44 Old 01-15-2020, 11:18 PM
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Nice room! The Titan towers are going to be great I’m happy to see each driver in its own chamber with a port that’s the only thing I would of changed on mine. Looking forward to this thread.
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post #10 of 44 Old 01-16-2020, 05:24 AM
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So those columns are for front left and right??
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post #11 of 44 Old 01-16-2020, 02:10 PM
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This will be an awesome setup... very excited to see it all come together!

Blister64 Full Basement Build Panasonic PT-AE8000U | Yamaha RX-A3070 | Emotiva XPA-7 Gen3 | DIY Sound Group Ported 1299 TMWW Front Stage | DIY SG Volt 10 Surrounds | Monoprice 8" Alpha In-ceiling Atmos | Three Stereo Integrity HS-24 mkIII's sealed | Sinbosen FP20000Q
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post #12 of 44 Old 01-20-2020, 05:50 PM - Thread Starter
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Been a busy few days, but my CNC guy still hasn't come through with an ETA.... Just got notice that my theater seats have shipped so it lit a fire under me to wrap up the ceiling Volt 10 in-ceiling speakers that were going to be a messy install! My drywallers only cut the drywall flush with the in-ceiling enclosure openings, so I had a to create a jig for my trim router to cut 5/8" deep and a 5/8" larger diameter opening, rig up a dryvac dust capturing solution, modify a drywall bit to cut full depth (the bits have a bearing surface to zip open flush drywall holes, but I needed full depth of cut), and then open up the ceiling holes so that the Volts are recessed and close to flush with the drywall. Worked unbelievably well. Painting the chalky drywall edges, not so fun.... but got it done. I then trimmed the 12g speaker wires and soldered on some spades finished with some heatshrink.

Next ceiling speaker issue to tackle: I didn't drill holes for the drivers, as I didn't have the drivers when I initially built the in-ceiling enclosures. So I traced/cut out a quick template and punched some holes, then held this template up into each ceiling speaker opening, marked and then drilled all of the screw pilot holes. Again, this was something I was not looking forward to doing but turned out going far smoother than expected! I just need some female quick disconnects for the woofers so that I can finish up the crossover-to-driver wires, then the crossovers and drivers get installed! All of my DIYSG kits only came with quick disconnects for the tweeters and I didn't realize it until yesterday when I went to make all of the internal enclosure wires...

I also found the time to finish trimming, sanding and painting (Duratex) all eight of the HTM-10 enclosures. They all got two coats rolled on with a thick nap roller and driver/waveguide openings painted with a small foam brush (https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1). Somehow I only used about 1/4 gallon of Duratex. Only my second time using Duratex, but I was expecting to use quite a bit more. Waiting for these to dry, then painting the backs, installing the crossovers and then sliding them into their final resting places in the pillars! *edit: backs painted and pic added

Might actually get some sound pumping by end of the week. Hard to believe I'm almost there!

P.S. This forum leaves something to be desired when it comes to adding images - some of them have randomly rotated and are out of order *sigh*
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post #13 of 44 Old 01-21-2020, 08:44 AM - Thread Starter
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Here are some pics building the Volt 10 crossovers. I finished all of the crossovers (Titans, HTMs & Volts) in early December, just been too busy with life to get this build finished. Laser focused now!
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post #14 of 44 Old 01-29-2020, 05:54 PM - Thread Starter
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Made the final push to get the Volts installed before the Octane Pillow HR seats showed up. Got them installed this morning and seats installed and setup this afternoon! Fully soldered wire terminations, attached wiring to the crossover on the bench then mounted them inside the in-ceiling boxes, lightly stuffed the boxes with Acousta-Stuf (lightly filled the cardboard box that the Volt woofers came in - extremely scientific measuring), and finally performed a solo circus act to gently mount them into the in-ceiling boxes without putting a screwdriver through a cone. Success!

Notice the drywall screws that will be the mounting points for the magnetic grills...
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post #15 of 44 Old 01-29-2020, 05:59 PM - Thread Starter
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And the seats are delivered and setup! Finally starting to look like a theater room.

One front row armrest was ripped and there's a small nick in one of the back row armrests, but overall VERY pleased.

HTM-10's will be done and installed by Friday and my cabinet guy has the Titan 630LX and SHS-24 enclosures scheduled on the CNC... Should be able to pickup the panels early next week to start putting them together. Next weekend is going to be awesome!!
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post #16 of 44 Old 01-29-2020, 06:03 PM - Thread Starter
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Quote:
Originally Posted by trilkb View Post
So those columns are for front left and right??
Front wides (L & R)
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post #17 of 44 Old 01-30-2020, 03:05 AM
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Looking killer! I'd be interested in those Titan and 24" CNC files.
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post #18 of 44 Old 01-30-2020, 07:10 AM
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Pad those walls soldier!

Excellent space. Very jealous.

Sent from my ONEPLUS A6013 using Tapatalk
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post #19 of 44 Old 01-30-2020, 10:32 AM - Thread Starter
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Quote:
Originally Posted by Kothoga View Post
Looking killer! I'd be interested in those Titan and 24" CNC files.
DM me your email and I'll send them over (let me know if you want the Fusion 360 file so you can manipulate them or the DXF files ready to export to CAM).

I added a few updates since the renderings in the OP (roundovers to all enclosures, Speakon holes/mounts to the back of all enclosures and an extra woofer support ring on the inside of the baffle for the SHS-24's that will be getting stainless 1/4-20 threaded inserts before getting glued to the inner baffle).
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post #20 of 44 Old 01-30-2020, 12:04 PM - Thread Starter
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By the way, if you're looking for wire termination forks, I used these and they fit the screw terminals provided by DIYSG perfectly: https://www.ebay.com/itm/400412611178

I also used these female quick disconnects for the Volt woofers and the fit was perfect, but I had to squeeze them down with pliers to get the tight fit that I wanted: https://www.ebay.com/itm/172918857531

These are both for 14-16g wires, but I used a small punch and opened them up slightly to fit 12g and 10g wires with no problem (if you're only crimping with no solder, it could be a problem).
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post #21 of 44 Old 01-30-2020, 08:16 PM
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Looking awesome! I like those seats. Volt 10s are coming along nicely.


-Trevor
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post #22 of 44 Old 02-01-2020, 08:55 AM
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I once had an Emotiva processor.
They never could get the thing to work, even after 10 FW updates, and eventually they just abandoned those customers for a newer processor (that also doesn't work fully). Fast forward 2 generations and they are still at it, I see.

I eventually swapped it out for a Marantz and have been problem-free ever since.
I don't need Dirac and another 2 Atmos heights if it can't lock onto an HDMI signal for a full 3 hours / all-day / at-all... etc
I don't think they will ever win me back as a customer, not for their processors at least.



I think you will quickly find out that triple DW doesn't stop the bass that 24's are capable of generating.

It stops all treble, and up to about ~THX-worth of bass though.
Bass goes through drywall/doors/windows like x-rays...

I learned this the hard way, as have several other heavy hitters.
It will literally destroy the house, or feels/sounds that way...
There is a reason my HT is in its own building, far away from the main house. Exactly that reason in fact.

Keep in mind these high-end 24's are capable of roughly ~4 inches of excursion.

This is only like 1.5inches of excursion at-most, with the average being closer to about ~0.25-1inch there.
Life easily has a good 5db of excursion headroom remaining (if he wants/needs it)...

A single Gen1 HS-24 on databass did like ~130 something db at 2m, without wall gain;
and the SHS-24 and SAB-24 are even more powerful by at least 3db (thermally).

I guess you'll find out first-hand soon enough...
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post #23 of 44 Old 02-02-2020, 03:36 PM - Thread Starter
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3 of 8 HTM-10's are done. Gotta watch the Superbowl, or else I'd be wrapping them all up right now! Again, fully soldered internal wiring. 12g from Speakon to crossover, 14g to woofer, 16g to tweeter. On another thread I picked up a trick to spray some flat black spray paint into a cup and use a small brush to paint the silver woofer bevels. Surprisingly simple solution, but annoying that they're not all black from Eminence...

I added a large handful of Acousta-Stuf to cover the crossover and wrap around the Speakon mount so that all surfaces of the inside of the enclosure are covered in some type of dampening material - the speaker wires hold it all in-place so it's not going anywhere. Speaking of dampening material, the 1" recycled denim from from HD is crazy easy to work with. I just set my table saw fence to 6" and ripped up 4 bags of it, used 3M Super 77 spray adhesive and it went in super easy.

For some reason when cutting the ports down to 3" on the table saw, one of them literally grenaded on me... Just exploded upon meeting the saw blade... thankfully didn't take my hand with it. 15 out of 16 went super smooth. Weird... Hit the cut edges with some 400 grit sandpaper to smooth them out and simply pressed them into the holes with my hand and body weight.
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post #24 of 44 Old 02-02-2020, 03:41 PM - Thread Starter
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Originally Posted by BassThatHz View Post
I once had an Emotiva processor.
They never could get the thing to work, even after 10 FW updates, and eventually they just abandoned those customers for a newer processor (that also doesn't work fully). Fast forward 2 generations and they are still at it, I see.

I eventually swapped it out for a Marantz and have been problem-free ever since.
I don't need Dirac and another 2 Atmos heights if it can't lock onto an HDMI signal for a full 3 hours / all-day / at-all... etc
I don't think they will ever win me back as a customer, not for their processors at least.



I think you will quickly find out that triple DW doesn't stop the bass that 24's are capable of generating.

It stops all treble, and up to about ~THX-worth of bass though.
Bass goes through drywall/doors/windows like x-rays...

I learned this the hard way, as have several other heavy hitters.
It will literally destroy the house, or feels/sounds that way...
There is a reason my HT is in its own building, far away from the main house. Exactly that reason in fact.

Keep in mind these high-end 24's are capable of roughly ~4 inches of excursion.

This is only like 1.5inches of excursion at-most, with the average being closer to about ~0.25-1inch there.
https://www.youtube.com/watch?v=UO6qXOse5ss
Life easily has a good 5db of excursion headroom remaining (if he wants/needs it)...

A single Gen1 HS-24 on databass did like ~130 something db at 2m, without wall gain;
and the SHS-24 and SAB-24 are even more powerful by at least 3db (thermally).

I guess you'll find out first-hand soon enough...
Def not expecting the triple drywall to contain the bass. The primary reason was to help deaden the room and allow me to listen at a decent volume while the rest of the family is sleeping upstairs. We'll soon find out if late night viewing is going to be without subs!
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post #25 of 44 Old 02-02-2020, 10:39 PM
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For some reason when cutting the ports down to 3" on the table saw, one of them literally grenaded on me... Just exploded upon meeting the saw blade...
Ya, that can happen on the table/miter saw with plastics. If you have access to a bandsaw that tends to have less risk of this happening.

Everything is looking good though!
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post #26 of 44 Old 02-03-2020, 07:22 AM
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All you have to do is flip the blade around so that it is spinning the opposite direction when cutting plastics. This will help prevent splitting, cracking, and grenading...
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post #27 of 44 Old 02-03-2020, 10:28 AM - Thread Starter
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All you have to do is flip the blade around so that it is spinning the opposite direction when cutting plastics. This will help prevent splitting, cracking, and grenading...
Now you tell me 🤦*♂️😁
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post #28 of 44 Old 02-03-2020, 11:30 AM
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Holy crap, haven't checked this thread in a while and YOU are making tremendous progress in getting this done. Too bad about some of your seats but when it is dark in there no one can see. This will sound awesome when it come together. Keep up the pics and good work.


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post #29 of 44 Old 02-07-2020, 03:15 AM
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Looking killer! I'd be interested in those Titan and 24" CNC files.
DM me your email and I'll send them over (let me know if you want the Fusion 360 file so you can manipulate them or the DXF files ready to export to CAM).

I added a few updates since the renderings in the OP (roundovers to all enclosures, Speakon holes/mounts to the back of all enclosures and an extra woofer support ring on the inside of the baffle for the SHS-24's that will be getting stainless 1/4-20 threaded inserts before getting glued to the inner baffle).
Sent, thanks!

Theater: JVC RS540U, 2.35:1 142" screen, Onkyo RZ1100, Panasonic UB820, Outlaw Audio M2200 Monoblock x3, Klipsch RF7II, RC64II, RS62II, 5800CII x4 Atmos, PSA V3611 Subwoofer x2.
2 Channel: Parasound P6, Parasound A23+, Rega Planar 6 with Ortofon 2M Bronze, Klispch La Scala II.
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post #30 of 44 Old 02-08-2020, 11:38 AM
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Looks awesome! Man, your setup is really close to the end goal of my theater. Gonna be watching this one closely!

I wish I had access to a CNC when I built the boxes for my HS24s. I had to use the human CNC! Which, basically consisted of a nice jigsaw and a lot of patience.
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